50 dead and 53 injured in Orlando club shooting; Authorities have identified shooter

A total of 50 people are dead and another 53 injured during a shooting inside an Orlando gay nightclub, authorities said in a Sunday morning news briefing.

As information was released about the fatalities inside Pulse Orlando, officials from the FBI said they have identified the shooter, who was killed. An official speaking at a press conference Sunday said more information about the shooter would be released.

ABC News and several other news agencies have identified the shooter as Omar Mateen of as Omar Mateen of St. Lucie County, Florida.